Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Genoese Pastry
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Sift the flour and baking powder together.
Prepare a cake tin by greasing it and lining it with paper.
Melt the butter.
Make the batter
In a basin, combine the eggs and sugar, then place the basin over a pot of boiling water and whip for 20 minutes.
Remove the basin from the heat and stir in the flour and melted butter; mix lightly and quickly.
Bake
Pour the mixture into the prepared tin and bake in a 350°F (175 °C) oven for about 20 minutes.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whipped with sugar to trap air, giving the cake its light, airy structure.
- Sugar
- Whips with the eggs to stabilise the foam and adds sweetness and browning.
- Flour
- Provides the starch that sets during baking to give the cake its structure.
- Butter
- Adds fat for a tender crumb and rich flavour.
- Baking powder
- Releases gas during baking, helping the cake rise.
The step that matters
Folding in the flour and butter. Mixing too vigorously after whipping knocks out the air the eggs and sugar have trapped, producing a dense cake. Stirring lightly and quickly keeps the batter airy.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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